Near Play d'en Bossa at Ibiza's Hippodrome, the Sant Jordi Flea Market - with brick-a-brac, second-hand clothes and antiques - is open all year round and very popular with locals and tourists alike. Note that there isn't much shade so come prepared with a hat, shades and suncream and avoid the hours of midday until 2 pm.
Hipódromo Sant Jordi, Ibiza, Balearic Islands, Spain